Subject: bug#10493: coreutils shred fat32

From: Leontiev Danil <[email-masked]>
Date: Fri, 13 Jan 2012 13:49:46 +0400

Thx for the answer.

first start:
[root@localhost usb]$ LANG=C shred -uvf /media/usb/test 
shred: /media/usb/test: pass 1/3 (random)...
shred: /media/usb/test: pass 2/3 (random)...
shred: /media/usb/test: error writing at offset 0: Invalid argument

second start: 
[root@localhost usb]$ LANG=C shred -uvf /media/usb/test 
shred: /media/usb/test: pass 1/3 (random)...
shred: /media/usb/test: pass 2/3 (random)...
shred: /media/usb/test: pass 3/3 (random)...
shred: /media/usb/test: removing
shred: /media/usb/test: renamed to /media/usb/0000
shred: /media/usb/0000: renamed to /media/usb/000
shred: /media/usb/000: renamed to /media/usb/00
shred: /media/usb/00: renamed to /media/usb/1
shred: /media/usb/test: removed

I did insert debugging information in a source, I can send, and this log.

Obscure point is related to the variable "ssize", in which the first "run" to 4096. If you call the utility shred on device with a non-fat32 fs (i use ext2 i.e.), the value will -1.

Sorry for my english.

13.01.2012, 13:13, [email-masked]:
> ----- Mail original -----
>
>>  De: "Leontiev Danil" <[email-masked]>
>>  À: [email-masked]
>>  Envoyé: Vendredi 13 Janvier 2012 08:43:26
>>  Objet: bug#10493: coreutils shred fat32
>>
>>  Good Day.
>>
>>  I have problem with using shred util.
>>
>>  On usb-flash fs - FAT32
>>  Files are not deleted from the first time.
>>  The important point: file's size < 12kb
>>
>>  [root@localhost re]# shred -uvf /media/usb/test
>>  shred: /media/usb/test: проход 1/3 (random)...
>>  shred: /media/usb/test: проход 2/3 (random)...
>>  shred: /media/usb/test: error writing at offset 0: Invalid argument
>>              <---- error
>>
>>  [root@localhost re]# shred -uvf /media/usb/test
>>  shred: /media/usb/test: проход 1/3 (random)...
>>  shred: /media/usb/test: проход 2/3 (random)...
>>  shred: /media/usb/test: проход 3/3 (random)...
>>  shred: /media/usb/test: удаление
>>  shred: /media/usb/test: переименован в /media/usb/0000
>>  shred: /media/usb/0000: переименован в /media/usb/000
>>  shred: /media/usb/000: переименован в /media/usb/00
>>  shred: /media/usb/00: переименован в /media/usb/0
>>  shred: /media/usb/test: удалён
>>
>>  Best regards,
>>  Leontiev Danila.
>
> Could you run the 2 commands with LANG=C for those that can read the messages above
>
> LANG=C shred -uvf /media/usb/test
>
> Gilles